Heated-air-supply apparatus for cloth-driers



v F. F. MclVER, In. HEATED AIR SUPPLY APPARATUS FOR CLOTH DRIERS.

APPLICATION FILED SEPT. 19, 'I9I8.

Patented Apr. 27, 1920.

- lNl/EIVTDR F. F. MIver Jr. 7%w

ATTORNEY FRANCIS I. MOIVER, JR., 013 CHAPPAQUA, NEW YORK.

HEATED-AIR-SUIPLY APPARATUS ron cLorH- nnmns.

Specification of Letters latent.

Patented Apr. 27, 1920.

Application filed September 19, 1918. Serial No. 254,755.

To all whom it may concern Be it known that I, FRANCIS F. -MoIvER, Jr.,a citizen of the United States, and a resident of Chappaqua, in thecounty of Westchester and State of New York, have invented a new andImproved Heated-Air- Supply Apparatus for Cloth-Driers, of which thefollowing is a full, clear, and exact description.

Among the principal objects which the present invention has in view are:to avoid the necessity of providing a vertical support for cloth of thecharacter handled by the apparatus herein disclosed; to rest the supplyof cloth in position for feeding said cloth to the drier; to preventcreasing the cloth while waiting to be dried; to economically heat airfor supplying the drier and to modify and control the heateryand toavoid transmission of heat from the pipe supplying heated air to thecasing thereof forming a support for the cloth preliminary to drying.

Drawings.

1 Description.

The apparatus herein disclosed is employed for. drawing tubular wovencloth after the same has been sponged or dampened for shrinking thesame. This cloth is preferably wovento form a circular tube, thediameter of which is approximately three feet. The piece turned out bythe loom is approximately sixty feet in length.

I This, of course, may vary. In the trade,

however, the piece is considered to contain twenty yards. These piecesare delivered by the sponger to be dried.

The drier usually consists in the relatively short drum 9, the diameterof which is that of the tubular cloth. A spreading guide section 10 isfurnished for guiding the cloth onto the drum 9. At the upper end of thedrier, there is usually provided a flattened spreading section 11, bywhich the cloth is guided to the feeding rollers 12 and 13, the

former running idle while the latter is driven. The rollers 12 and 13are mounted 1n a framelt, wherein a rolling center piece 15 for thecloth is guided in a vertical slot 16, said center piece 15 havingpintle ends extending into the said slots 16. The center piece 15 andthe cloth rolled thereon, rests upon and is driven by the roll 13. Bythis means there is insured the correspondence between the delivery ofthe cloth from the rolls 12 and 13, with the peripheral speed of thegradually increasing roll of cloth accumulating about the center piece15.

Heretofore in order to avoid wrinkling the cloth while damp, it has beensuspended verticallybelow the drier. The drier has been supplied withthe heated air, the conduit for which has extended vertically throughthe suspended cloth. The objection whichhas arisen has been principallythat such a construction has required too much building space.

As seen in the drawings, the conduit 17 is disposed in horizontalposition and has an upturned elbow 18. At the delivery end of the elbow18, is a spider 19. At the center of the spider, there is a socket toreceive a pintle 20. The pintle 20 is a part of the construction of theguide section 10 of the heating drum 9.

Surrounding the conduit 17 is a acket 21.

'The jacket 21 supports the cloth which is drawn thereover and disposedthereon in suitable folds, while the drying drum is removed. The jacket21 is rigidly held in a housing 22, cast or otherwise structurallyincorporated with 'a'supporting base 23.

The end of the housing 22 forms a coneshaped receiving chamber 24, whichis in 'open communication with the delivery end of the blower 25. 'Theair blower 25, as shown best in Fig. 4 of the drawings, is directlyconnected with a motor 26. The center feed opening of the air blower isincreased or diminished by a gate valve, thereby regulating the quantityof air delivered from the blower 25 to the chamber 24. Heat is furnishedfor the conduit17 by a gas torch, thesupply pipe 29 whereof iscontrolled by a valve 80. Thepipe 29 enters an open-ended gas-burningtube 31. Centrally disposed in the tube 31, is an open-ended tube 32.The tube 32 is arranged to receive from the chamber 2% or the blower 25,a column of air, which at the delivery end of the tube 32 passes throughthe gas delivered to the tube 31 by the supply pipe 29. 5 The efi'ect ofthe rush'of air through the tube 32 on the gas in the tube 31, is tospread or*flare the column of gas from the *center outward. The gas sospread. meets a column of air passing through the tube 33 which10.,surrounds:the tube 31, to form an. annular space. The inner end ofthe tube "33rests within the chamber 24and isfed with air receivedtherein'from the blower 25. The .air in passing through thetube'33around the tube 31, formsa hollow-centered column ofmoving air,whiclrmixes vwitlrthe gas delivered from the tube 31 and carries thesamepast the end of thetube 33, and into the conduit17. Theilength of thetube 33 is .augmented at the delivery andthe re -ceiving ends bythetelescopic extensions34l and :35. By moving the extension 35 to-.wardthe fan'blower 25, a proportionately larger amount of the airdelivered by-said blower is delivered through the tube 33, withcorresponding curtailment of the amount of air which is delivered to theconduit 17 .and'space between the said conduit and the jacket 21.Likewise, if the extension 34' is moved outward fromthe tube 33,;theflame of 1 the burning gas is carried farther intothe conduit withtheconcomitantithat the resultant heat in the conduit is somewhat lessened.

To prevent the heat vwithin' the conduit being transmittedto-the-jiacket2l the con duit :is coated withan asbestos;packing 36. Thepacking 36 is held in;placeby-ia-metal jacket 37 The-air .from;thechamber .24 40 which {passes through the vannular space I 38 between thejackets 21 and 37, conveys ofi 7 any heat which may penetratethe packingi36, to-the jacket 37. Therefore-it is-found that duringthe operation ofthe apparatus, while the temperature of :the heated air within theconduit 17 is usually 500 F the heat of:- the jacket 21 is lessrthan 100F.

When provided with an apparatus such as described, the operation is asfollows: The cloth in its tubular form iscollected on the jacket 21 infolds. When the entire .piece of clothbasbeenplaced onthe jacket :21,the drum 9 is reinstated-in service posi- @tion. by :placing the pinion20' in I the socket providedthereforzin the spider19. Theend of thecloth is now 'brought around over the :drum12. Thetorch formed-by thetube 31 is nowi ignited. .The blower, 25=is -started and :air isi=blown-through the tubes 32,:33, conduit 17 andthe jacket '21. Theendofthe "cloth is drawn ;over the'drum .9 and the :spreading'section 11thereof,--and is! threaded between the rolls 12 and 13:and attached tothe center piece 15. The -motor '26: is started withthe result thatgairmixed withgthelheat from the torch is driven through the conduit '13,and the center piece 15 and the cloth accumulating thereon is wound intoa roll of cloth. The cloth is drawn from the jacket 21 until the pieceis exhausted. The .valve 30 is then closed. to suspendthe-heatin theconduit 17. The drum 9 is removed from the end of the elbow .18 and :asucceeding piece of cloth is deposited on the jacket2l.

It willbe'understoodthat the conduit.17 is supported bythejacket 21, andthe jacket 21 is supported within the housing 22. Any necessary bracesbetween the,jacket.37 surrounding the conduit 17 .and the jacket 31,

may be employed.

The cover 10 in service covers ahandlhole through which the torch, isignited atthe beginning of the operation of: the apparatus.

I Claims.

the said .pipe, and also through @the Fair.

chamber between the pipe and the casing.

'2. A cloth: drier comprising a-iconduit for heatedairya support forsaidconduit, said support embodying a covering ,jacketsurrounding; saidconduit and d sposed 1n substantially horizontal position; means :formaintainingsaidjacket andsaid conduit in spaced relation to form an. airpassage therebetween; means for forcing a column of air through .saidconduit; means disposed at .the receiving end ofsaid conduit :forheatingsaid column ofair, said meansienr 'bodying a gastorch, thedelivery end where? of extends into said conduitfhand ,means *fordistributing the heated medium delivered by said torch, .said ,meansembodying an open-ended tube surronndingsaidtorch and disposed inposition toibe supplied by said means for :forcing the airthroughv saidconduit.

3. A cloth drier comprising, aconduitior heated air; a-supportfor saidconduit; said support: embodying, a' covering jacket .sur;

1 rounding said conduittand. disposed substantially .horizontalposition; .means for Zmaintainingsaid jacket andsai'd conduitin spacedrelation to form an air passage therebetween; means for forcing a columnof air through said conduit; means disposed at the receiving end of saidconduit for heating said column of air, said means embodying a gastorch, the delivery end Whereof extends into said conduit; and means fordistributing the heated medium delivered by said torch, said meansembodying openended tubes, said tubes being disposed concentric withsaid torch and with each other, one of said tubes extending through saidtorch to be infolded thereby, and the other of said tubes infolding saidtorch, said tubes providing a supply of air internally and ex ternallydisposed With relation to the fuel delivered by said torch.

4;. A cloth drier comprising a conduit for heated air; a support forsaid conduit, said support embodying a covering jacket surrounding saidconduit and disposed in substantially horizontal position; means formaintaining said jacket and said conduit in spaced relation to form anair passage therebetween; means for forcing a column of air through saidconduit; means disposed at the receiving end of said conduit for heatingsaid column of air, said means embodying a gas torch, the delivery endwhere of extends into said conduit; means for distributing the heatedmedium delivered by said torch, said means embodying openended tubes,said tubes being disposed concentric With said torch and with eachother, one of said tubes extending through said torch to be infoldedthereby and the other of said tubes infoldin said torch, said tubesproviding a supply 0 air internally and externally disposed withrelation to the fuel delivered by said torch; means for augmenting thevolume of air delivered through the tube surrounding said torch, saidmeans embodying a movable extension of said tube, said extension beingadapted for augmenting or diminishing the column of air supplied to saidconduit and said jacket;

and means for increasing the combustion of gases supplied by said torch,said means embodying a movable extension tube telescopically arranged onthe tube surrounding said torch and extensible lengthwise thereof.

5. An apparatus as characterized comprising a combination of avertically disposed drier; a supply conduit therefor, said conduit beingdisposed in substantially horizontal arrangement; an air-circulatorymechanism operatively connected With said conduit; a supporting jacketsurrounding said conduit for holding cloth ready for delivery to saiddrier; and means preventing the heat being exchanged between saidconduit and said jacket.

FRANCIS F. McIVER, JR.

